共查询到20条相似文献，搜索用时 812 毫秒
1.
采用循环式生物曝气滤池工艺（CBAF）,对炼油碱性污水硫化物进行了预处理实验研究,初步探讨其去除机理。研究了不同水力停留时间（HRT）、溶解氧（DO）、pH等对污水中硫化物的影响。当水力停留时间为32h,溶解氧不小于2mg·L^-1,pH范围在5～8时,硫化物平均去除率达到99．5％,且循环式生物曝气滤池工艺处理效果好．运行稳定。 相似文献
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杨伟柱 《广东轻工职业技术学院学报》2004,3(1):12-14
在一定的电解装置内研究可溶阳极（铁阳极）电解法处理漂染废水技术,探究废水的电流强度、pH值和电解时间对废水CODcr去除效果的影响规律。结果表明采用可溶阳极（铁阳极）法处理漂染废水的最佳工艺条件是：电解时间为20min时,电流强度为300～400mA．进水pH值5,5～6,处理后CODcr去除率达61.4％。 相似文献
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SBR法处理模拟印染废水的实验研究 总被引：1，自引：0，他引：1
采用实验室规模的序批式活性污泥曝气反应器（SBR）工艺处理模拟的印染废水．通过实验分析了不同曝气时间、进水浓度、静沉时间与SBR处理效果之间的关系,确定了SBR法处理中低浓度的印染废水的最佳运行参数．实验结果表明,在SBR的曝气时间为8h,沉淀时间为1h的条件下,且废水进水pH值为7．5～8．6,COD—cr为8901080mg／L、氨氮为13～20mg／L、色度为350倍左右时,该工艺对CODcr、氨氮、色度等均有很好的去除效果,经处理的印染废水COD、氨氮、色度去除率分别为50％～70％、40％～67％、20％．该法具有投资少、运行费用低、操作简单的特点． 相似文献
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朱蕾 《渭南师范学院学报》2014,29(19):34-38
在处理制革废水中常用SBR工艺,试验探讨了不同HRT、进水pH、COD负荷、NH3-N浓度、活性污泥浓度的运行参数,研究SBR工艺处理制革废水的最优运行参数．结果表明：SBR反应器在进水COD为1500～2000mg／L、NH3-N为150～250mg／L、pH为7．5、运行污泥浓度在3．0g／L左右、曝气时间为18h时COD去除率能达到95％左右,NH3-N去除率达到97％左右,其出水能够达到一级出水标准． 相似文献
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采用SBR法处理喹吖啶酮颜料中间体废水,考察了SBR法处理喹吖啶酮颜料中间体废水的效果、曝气时间、pH值和进水COD值等条件对处理效果的影响.结果表明曝气时间6h、进水pH值为7.0～8.5、进水COD值为1 000 ～ 2 000mg/L时,COD去除率达到71.3%～77.2%. 相似文献
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通过比对分析高甲醛净化性能内墙涂料的配方设计,研究可根据需求更改的基本配方,确定简单易行的乳胶漆制备工艺,制成高甲醛净化性能内墙苯丙乳胶漆,其理化综合性能优异,且甲醛净化性能指标高于行业标准要求值。 相似文献
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铁碳内电解前置处理染料废水的试验 总被引：1，自引：0，他引：1
采用铁碳内电解法前置处理染料废水,主要研究了铁粉粒径、pH值、停留时间对处理效果的影响。结果表明,采用铁粉粒径18目、原水pH值为6、停留时间60~90min,废水的BOD/COD值从原来的0.23提高到0.59,为后续生化处理提供有利条件. 相似文献
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固定化微生物--曝气生物滤池工艺在废水处理中的应用 总被引：1，自引：0，他引：1
采用固定化微生物-曝气生物滤池污水处理系统（IBAF工艺）对多种实际高浓度有机废水进行实验研究。实验结果表明：该工艺在去除COD、氨氮、挥发酚、色度、SS方面具有独特的优势，将成为处理高浓度有机废水的主导工艺。 相似文献
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建设精品实验项目深化创新人才教育 总被引：1，自引：0，他引：1
精品实验项目“细菌纯种分离和培养”以校园河水、上海某污水处理厂的生活污水和生化反应池中的活性污泥等实际环境样品为研究对象,利用浇注平板法对校园河水、生活污水和活性污泥中的特有微生物进行分离、纯化,旨在得到能够降解污染物的细菌纯种.该项目将微生物学基本理论知识与实际环境问题相联系,将环境微生物学实验中原先相对独立的多个基本实验通过有机组合形成了一个完整的探索性综合实验,激发学生的学习兴趣,增强学生的主观能动性,培养学生的实践能力和创新能力. 相似文献
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通过实验研究及工程验证表明,采用浓缩活性污泥回流替代传统回流方式后,虽然污水厂处理效率略有下降,但仍能满足国家排放标准,表明在确保污水厂良性运行前提下,浓缩活性污泥回流运行措施用于中小型污水处理厂节能降耗是可行的。 相似文献
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A sequencing batch reactor (SBR) seeded with activated sludge was established for landfill leachate treatment. Small bio-aggregates
began to appear after 40-d operation, and gradually changed to mature aerobic granules, with a mean size of 0.36–0.60 mm.
Their sludge volume index at 5 min (SVI5 min), mixed liquor volatile suspended solids (MLVSS), and wet density were around 35 ml/g, 3.4 g/L, and 1.062 g/cm3, respectively. The settling velocities of the granules in distilled water ranged from 0.3 to 1.3 cm/s, which were faster
than those in landfill leachate with a salt content of 1.4% (w/v), and also slightly faster than those predicted by Stokes’
law for porous but impermeable particles. Microbial community evolution during the granulation process and stages under different
nitrogen loading rates (NLRs) were monitored and analyzed by polymerase chain reaction-denaturing gradient gel electrophoresis
(PCR-DGGE), cloning, and sequencing of 16S ribosomal RNA (rRNA) fragments. Results revealed that some primary and dominant
communities in inoculating activated sludge died out gradually; while a few common bacteria, inhabiting soils, municipal wastewater,
or activated sludge systems, dominated in the SBR system throughout. In addition, some other dominant species, associated
with the aerobic granulation process, were thought to play a significant role in the formation and growth of aerobic granular
sludge. During the stable operation time under low NLR, a few species were present in abundance, and may have been responsible
for the high organic removal efficiency at this time. 相似文献
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The mechanical dewatering of activated sludge is difficult due to its high compressibility, which can be improved by electroosmosis. In electroosmosis, direct electric field is applied to sludge cake. Based on the conductivity modes of different sludge beds, a model is presented in which sludge cake consists of two series parts in the circuit: a dewatered bed and an undewatered one. The dewatered bed called solid conductor is mainly made up of immovable water and sludge particles. The undewatered bed includes movable water and solid conductor, which are connected in parallel in the circuit. The model describes the variation of water content with time and electric power consumption as a function of water content in sludge cake, and interprets the reason for the variation of electroosmotic dewatering rate. Comparison with the experimental data for electroosmotic dewatering under constant voltage supports the validity of the model. 相似文献
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利用造纸厂废水污泥制备活性炭 总被引：1，自引：0，他引：1
赵素青 《南阳师范学院学报》2013,12(6):24-27
以造纸废水处理厂污泥为主要原料,采用化学活化法制备活性炭,考查了活化剂的浓度、活化温度、活化时间、固液比等方面对污泥吸附性能的影响.结果表明:在氯化锌溶液为40%、活化温度为600℃、活化时间为15 min、固液比为1∶3的最佳条件下制备的污泥活性炭碘值达到320 mg·g-1,而加入10%的茶梗添加剂制备的活性炭碘值可达503 mg·g-1,因此引入添加剂可以改善污泥活性炭的吸附性能.利用该污泥活性炭处理含苯酚废水,具有较好的处理效果,因此加强开发并推广污泥制备活性炭新技术,实现废水污泥的资源化利用,成为处理剩余污泥的一种有效途径. 相似文献
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Trimeric quaternary ammonium surfactants are newly developed surfactants, their widespread synthesis and utilization results in a great amount of scouring wasterwater of high COD, which is unmanageable. The present investigation aims to find a new type of organo-bentonites modified by the scouring wastewater and to treat the scouring wastewater at the same time. Results of adsorption experiments of phenol and formaldehyde by the modified bentonite show that, at the optimal ratio 24 % (W/V) of modified bentonite to scouring wastewater, the removal rate of phenol and formaldehyde by FTAT scouring wastewater modified bentonite is 3.53 times and 2.48 times higher than that of Na-bentonite, and the COD of treated scouring wastewater reduces to below 200 mg/L, meeting the second level of Standards for Discharge of Water Pollutants from the Ammonia Industry of China. 相似文献
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1IntroductionIn recent years,tri meric quaternary ammoniumsur-factants,which have three hydrophobic and three hy-drophilic groups connected bytwo spacer chains,havebeen developed[1-5].The tri meric surfactants appearunique physicochemical properties such … 相似文献
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INTRODUCTION Coking wastewater is generated in the produc- tion of coke, coal gas, tar and other coke by-products The coking wastewater includes inorganic pollutants such as ammonia, cyanogen, sulfocyan, heterocycle compounds and polycyclic aromatic compounds such as phenol, oils, naphthalene, pyridine, quinoline and anthracites, which are difficult to biodegradation under aerobic conditions (Ganczarczyk, 1972). Dis- charge of coking wastewater to the environment may cause severe contamin… 相似文献
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本实验研究了以不锈钢片单独做阳极和以活性碳纤维毡片（＋不锈钢）的复合阳极对TNT废水电解效果的影响,并对电解机理进行了初步的探讨。原废水的TNT浓度为70—90mg／L,COD约为290—340mg／L,PH为7．5—9。实验数据显示,当槽电压为10V,PH值为3,外加电解质Na2SO4lg／L,极板间距为4era,电流密度为15mA／em。,搅拌转速为260r／min,电解2h时,以活性碳纤维＋不锈钢复合材料为阳极处理原废水,对TNT和COD的降解率分别为66．6％和55．5％,然而单独以不锈钢材料为阳极情况下,对TNT和COD的降解率仅为43．5％和24．7％。结果表明以活性碳纤维＋不锈钢复合材料为阳极对TNT废水中的有机物的电解效果显著,对实际工程废水处理有一定的指导意义。 相似文献